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Event Details

This course can be used towards continuing professional development (CPD) points*

Overview: The ‘how to’ guide

This one-day natural source zone depletion (NSZD) workshop will provide attendees with an understanding of NSZD processes, as well as where and when NSZD can be applied to site management. Evaluating NSZD processes can be valuable for delineating hydrocarbon impacts, baselining natural mass losses, and evaluating remedial alternatives. Attendees will gain an awareness of the different methods available for evaluating NSZD, along with the advantages and limitations of each method. In the afternoon, attendees will conduct hands-on training with the LI-COR instrumentation and process and review the data they collect. At the conclusion of the workshop, attendees will have working knowledge of the LI-COR instrumentation.

Who

The workshop is aimed at those with some knowledge of the contaminated site industry. The workshop should be of particular interest to regulators, industry professionals and consultants who work at or manage contaminated sites.

Workshop topics covered will include

Introduction: What is NSZD? What NSZD guidance exists?

Conceptual site models for NSZD

Key NSZD processes

How can NSZD be applied to site management, including delineation of hydrocarbon impacts, baselining natural mass losses, and evaluating remedial alternatives

Available methods for assessing NSZD in the field, including advantages and limitations

Hands-on training with the LI-COR method for assessing NSZD including data collection and review.

Workshop participants are required to bring a calculator and will receive an information pack containing:

course notes, handouts and group activities

a USB drive containing relevant NSZD documents and guidance material

a list of suggested pre- and post-workshop reading material.

Schedule

09:00 ~ 09:30 Registration

09:30 ~ 09:40 Welcome, outline of the day

09:40 ~ 10:25 Overview of NSZD

10:25 ~ 10:45 Break

10:45 ~ 11:30 Applications of NSZD – why, when, and when not to apply the approach?

11:30 ~ 11:45 Coffee and discussion

11:45 ~ 12:30 Methods for NSZD assessment – how do I measure it?

12:30 ~ 13:30 Lunch

13:30 ~ 15:30 Hands-on session

Run the LI-COR 8100 A CO2 flux instrument

Review data

Discuss field considerations

15:30 ~ 16:00 Coffee and discussion

16:00 Wrap-up

Presenter

Dr Natasha Sihota, PhD

Hydrogeologist with Chevron Energy Technology Company, USA.

Dr Natasha Sihota developed the surficial CO2 efflux approach for evaluating NSZD. She has extensive experience applying the NSZD concept to achieve different site management objectives. Natasha has been involved in developing guidance documents in the US for evaluating and applying the NSZD concept through the American Petroleum Association, the Interstate Technology and Regulatory Council, and other state groups. She has provided NSZD training to environmental regulators, industry colleagues, and university groups.